# CVE-2026-108738: Traccar CSRF vulnerability in OpenID Connect authentication

Source: https://junglewise.ai/threats/cve-2026-108738-traccar-5-7-through-6-16-0-contains-a-cross-site-request-forgery  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-11. Updated: 2026-10-16  
License: CC BY 4.0 with a link back

CVE-2026-108738 · Severity: medium · CVSS 4.2 · Published 2026-10-11

Traccar is an open-source GPS tracking platform used to manage vehicle fleets and device locations. A cross-site request forgery flaw in its OpenID Connect login allows attackers to trick victims into logging into attacker-controlled accounts, potentially causing tracked devices, location data, and other configuration to be registered under the attacker's control instead of the victim's.

Technologies: [Traccar](https://junglewise.ai/threats/technologies/traccar). Vendors: [Traccar](https://junglewise.ai/threats/vendors/traccar).

## Quick answers

**Is CVE-2026-108738 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-108738 being exploited in the wild.

**How severe is CVE-2026-108738?** Medium severity, with a CVSS score of 4.2, published 11 October 2026.

**Which products and versions are affected?** Traccar 5.7 through 6.16.0.

**Is there a fix for CVE-2026-108738?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-108738 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-108738?** Check whether you run Traccar at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

The vulnerability exists in the OpenID Connect callback handler (/api/session/openid/callback) in Traccar versions 5.7 through 6.16.0, which fails to validate the OAuth state parameter. An attacker can craft a malicious request with a victim's authorization code, causing the victim's browser to authenticate as the attacker's account. No special privileges or user interaction is required beyond inducing the victim to visit a malicious link.

## Affected products

- Traccar Traccar 5.7 through 6.16.0

## Timeline

- 2026-10-11: disclosed

## References

- [https://github.com/traccar/traccar](https://github.com/traccar/traccar)
- [https://github.com/traccar/traccar/blob/cfab560c79ee9c9eaa41c79c6df351e820d6284b/src/main/java/org/traccar/api/resource/SessionResource.java](https://github.com/traccar/traccar/blob/cfab560c79ee9c9eaa41c79c6df351e820d6284b/src/main/java/org/traccar/api/resource/SessionResource.java)

## Related threats

- [Traccar authentication bypass in LDAP empty password handling](https://junglewise.ai/threats/cve-2026-126777-traccar-3-15-before-6-17-0-contains-an-authentication-bypass)
- [Traccar path parameter bypass in media endpoint](https://junglewise.ai/threats/cve-2026-104203-traccar-is-an-open-source-gps-tracking-system-from-5-1-until-6)
- [Traccar password recovery token misuse vulnerability](https://junglewise.ai/threats/cve-2026-108737-traccar-through-6-16-0-contains-a-weak-password-recovery)
- [Traccar group hierarchy cycle denial of service](https://junglewise.ai/threats/cve-2026-52852-traccar-group-hierarchy-cycle-denial-of-service)
- [Traccar permission SQL injection via extra JSON keys](https://junglewise.ai/threats/cve-2026-52851-traccar-permission-sql-injection-via-extra-json-keys)